My dog often eats raw bones of various animals. Last month he came home with a wild boar skull which has now eaten almost entirely, aside from the teeth and tusks.
Yesterday he caught and ate an entire rabbit. There wasn't even a single hair left.
These are not things any human I know can do, safely or otherwise.
Hardy Fox of The Residents tells a great personal story about the exact sentiment expressed in this meme:
The Residents - Life Would Be Wonderful
The story is told at about 2m40s in.